DG1412EQ-T1-GE3

Overview

The DG1412EQ-T1-GE3 is a precision monolithic quad single-pole single-throw (SPST) CMOS analog switch manufactured by Vishay Siliconix. It features four independently selectable normally open switches housed in a TSSOP-16 package. The device operates from single supplies of 4.5 V to 24 V or dual supplies of ±4.5 V to ±15 V, with a maximum supply rating of 35 V. Key electrical parameters include a typical on-resistance of 1.5 Ω and a maximum of 2.6 Ω at ±15 V. It supports rail-to-rail signal handling, offers low charge injection, and ensures TTL/CMOS compatibility through defined logic thresholds.

Feature Summary

• Four independently selectable SPST switches configured as normally open
• Rail-to-rail signal handling capability across the full supply range
• Low on-resistance flatness ensuring excellent linearity and minimal distortion
• Integrated logic supply requirements with standard TTL/CMOS threshold compatibility

Applications

• Data acquisition systems
• Industrial control and automation equipment
• Medical instrumentation
• Audio and video signal switching
• Relay replacement circuits

Procurement Notes

Verify component authenticity against official Vishay documentation before integration. Confirm that the TSSOP-16 package dimensions align with your PCB footprint specifications. Ensure power supply rails remain within the absolute maximum ratings to prevent permanent damage. Validate thermal performance under expected operating conditions.

Selection Notes

Select this component when high linearity and low signal distortion are required for analog routing. The DG1412 variant specifically provides normally open switching behavior. Verify that the system voltage falls within the recommended operating range of ±4.5 V to ±16.5 V. Consider the 1.5 Ω on-resistance for insertion loss calculations in sensitive signal paths.

Part Context

This part belongs to the DG141x series, which includes the DG1411 (normally closed) and DG1413 (mixed NC/NO). All variants share identical pinouts and core electrical characteristics but differ in switch logic states. The EQ suffix denotes the TSSOP-16 package option, while EN indicates the QFN-16 package.

Replacement Considerations

DG1411EQ-T1-GE3: Identical package and specs but features normally closed switches instead of normally open.

FAQ

What is the logic state for activating the DG1412 switches?

The DG1412 switches are normally open; applying a Logic '1' (High) turns the switch on, while Logic '0' (Low) keeps it off.

Does the DG1412 require a separate VL logic supply?

No, the device does not require a separate VL logic supply. Digital inputs have 0.8 V and 2 V thresholds for direct TTL/CMOS compatibility.

What is the maximum continuous current rating for the TSSOP-16 package?

The maximum continuous switch current is 190 mA at an ambient temperature of 25 °C for the TSSOP-16 package.